摘要
针对棒形天线耦合雷电电磁波信号的问题,利用实验和理论相结合的方法,建立了棒形天线接收雷电电磁波信号的等效电路,分析了雷电电磁波信号的频谱及能量分布规律,提出了利用暂态抑制二极管器件(Transient Voltage Suppressor,TVS)抑制棒形天线耦合雷电电磁波能量的重复方法.实验表明:在馈电端并联TVS管后,从棒形天线S11曲线得出的天线中心频率及带宽略变小;馈电端并联TVS管可有效地抑制棒形天线耦合雷电电磁波电压的幅值,在馈电端并联两种不同型号的TVS管,棒形天线耦合雷电电磁波电压的幅值可分别被抑制到6.8V至7V以内.实验结果和理论分析结论基本吻合.研究结果对棒形天线耦合雷电电磁波能量的抑制方法具有一定的指导意义.
Based on analyzing the problem of the lightning electromagnetic signals coupled by stick antenna,the experiment and the theory are combined to find the equivalent circuit used to illustrate the antenna receiving electromagnetic signal.After the analysis of the spectrum of lightning electromagnetic wave signal and the distribution of the energy,a new method using transient voltage suppressor(TVS)to suppress the electromagnetic coupled by the stick antenna is proposed.In the experiment,the center frequency and the bandwidth change slightly observed from the S11 curve of the stick antenna when the TVS is in parallel with the feed port.The TVS can restrain the voltage effectively and the peak voltage coupled by stick antenna can be kept to 6.8~7V when two different models of TVS are in parallel with the feed port respectively.The results are coincidence with the theory,and are of certain guiding significance on the energy of lightning electromagnetic signals coupled by stick antenna.
出处
《电波科学学报》
EI
CSCD
北大核心
2015年第2期357-364,共8页
Chinese Journal of Radio Science
基金
国家自然科学基金项目(批准号:41075025)
